访问由 JSON 框架 iPhone 生成的嵌套数组和字典

发布于 2024-08-17 22:39:32 字数 673 浏览 12 评论 0原文

我正在使用 Google API 返回一些 JSON，我已使用 JSON 框架（Stig B - Google 代码）将其转换为 Objective C 类型。

我现在有这样的结构：

responseData
    results
        [0]
            title = "Stack Overflow"
    cursor

如何访问嵌套数组 results 来获取 title 值（我猜是字典）？

我已经尝试过，但没有成功：

    for (NSString *key in [jsonObjects objectForKey:@"responseData"]) {
        NSLog(@"%@",key);
        for (NSString *element in [key valueForKey:@"results"]) {
            NSLog(@"%@",element);   
        }
    }

外部循环将打印出数组 results 和 cursor 的名称，这样就可以工作，但对于内部循环，我得到一个 <代码>不符合键值编码错误。

谢谢

原文

I'm using a Google API to return some JSON, which i have converted to their Objective C types using the JSON-framework (Stig B - Google Code).

I now have structures like this:

responseData
    results
        [0]
            title = "Stack Overflow"
    cursor

How can i access the nested array results to get at the title value (dictionary i'm guessing)?

I have tried this but no success:

    for (NSString *key in [jsonObjects objectForKey:@"responseData"]) {
        NSLog(@"%@",key);
        for (NSString *element in [key valueForKey:@"results"]) {
            NSLog(@"%@",element);   
        }
    }

The outer loop will print out the names of the arrays results and cursor so that works, but for the inner loop, I get a not key value coding compliant error.

Thanks

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烛影斜 2024-08-24 22:39:32

您可以使用 NSLog([jsonObjects description]) 来查看字典的内容和结构。
要浏览到“结果”数组及其内容，您可以使用以下（或类似）代码：

NSDictionary* responseDict = [jsonObjects objectForKey:@"responseData"]; // Get your dictionary
NSArray* resultsArray = [responseDict objectForKey:@"results"]; 
for (NSDictionary* internalDict in resultsArray)
    for (NSString *key in [internalDict allKeys])
       NSLog([NSString stringWithFormat:@"%@ - %@", key, [internalDict objectForKey:key];

You can use NSLog([jsonObjects description]) to see the contents and structure of your dictionary.
To browse to your "results" array and its contents you can use the following (or similar) code:

NSDictionary* responseDict = [jsonObjects objectForKey:@"responseData"]; // Get your dictionary
NSArray* resultsArray = [responseDict objectForKey:@"results"]; 
for (NSDictionary* internalDict in resultsArray)
    for (NSString *key in [internalDict allKeys])
       NSLog([NSString stringWithFormat:@"%@ - %@", key, [internalDict objectForKey:key];

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